Android屏幕点亮(常亮)及屏幕解锁和锁定 | 萝卜白菜的小站

在程序开发时，有时候需要屏幕保持点亮/常亮及解锁状态。比方说，闹钟响起时需要点亮和解锁屏幕或者实现一个一键实现屏幕锁屏（锁定）效果。具体代码如下：

1、Android屏幕常亮/点亮

//保持屏幕常亮
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, LOCK_TAG);  
mWakeLock.acquire();

//释放屏幕常亮锁
if(null != mWakeLock) {
    mWakeLock.release();
}

2、Android屏幕解锁和锁定

//屏幕解锁
KeyguardManager keyguardManager = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
KeyguardLock keyguardLock = keyguardManager.newKeyguardLock(LOCK_TAG);
keyguardLock.disableKeyguard();

//屏幕锁定
keyguardLock.reenableKeyguard();

3、相关权限

<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
<uses-permission android:name="android.permission.WAKE_LOCK" />